Go-to library for instance segmentation in PyTorch?

I've tried various libraries for different types of detection/segmentation and have settled on timm for classification and segmentation-models-pytorch (SMP) for semantic segmentation. I'm still trying to figure out a solid choice for instance segmentation in terms of ease of use, performance, and flexibility. I have tried maskrcnn and pointrend in Detectron2 with good results but curious what else I should look into or what others are using in practice.

computervision library pytorch segmentation